Demonstrate and Understand the UI development

Objective

Demonstrate your knowledge and understanding of UI development

Problem Description

This assignment requires you to implement a gesture keyboard that also supports text-editing command input by drawing gestures. As the gesture keyboard was initially designed to input text by dragging the cursor over the letters in the desired word, you need to figure out a way to distinguish between text input and command input. For example, you draw a gesture from the keys s, a, v, and e on the keyboard. By default, you enter the word save. But how can you enter the command save by drawing a similar gesture?

This assignment is based on the lab of week 9 and assessment 2. In the lab of week 9, we developed the Gesture Keyboard. In assessment 2, you have proposed solutions to differentiate text input and command input on gesture keyboards. In this assignment, you need to select some solutions and implement them. If you have new solutions, you can also use and implement them.

Rules and Requirements

• Your program should be developed in Python.
• Your program must run correctly.
• Your program should support both word and command input on the gesture keyboard.
• Your code must be easy to read with the necessary comments.
• Make sure you have read this document and all relevant documentation.

Here are the main tasks you need to do for this assignment.

Step 1 Select solutions for the problem in Assignment 2

The first step is to determine the solutions you plan to implement for this assignment. You can select solutions proposed in assessment 2. If you have new solutions, you can also adopt them for implementation. Note that the solutions in assessment 2 are not compulsory to implement in this assessment.

Step 2 Select commands for gesture keyboard interaction

In the template.py (self.word_list), there are four command-related words: 'copy', 'redo', 'undo', and 'save'. Your solution can take them as example commands.

Step 3 Implement your solutions

You need to implement your solutions with Python on the gesture keyboard developed in the lab of week 9.

Here is an example solution. To input the word save, the user just needs to drag the cursor over the keys s, a, v and e. To input the command save, the user can double-click on the vicinity of the key s and draw a gesture from the keys s, a, v, and e on the keyboard. Such a way can be used to differentiate text input and command input on gesture keyboards.

Your application should support both text and command input. Text entry should be the same as the gesture keyboard in the lab of week 9. For command input, the application should generate a message box showing which command is triggered (as shown below). If not a command of the four ('copy', 'redo', 'undo', 'save'), the message box should show Not a command.

Note that for most solutions, you just need to add and revise code in the module text_entry_window.py to implement your solutions.

You need to have your solution projects in separate zip or rar files and submit them separately to LMS.

Fig. 1. (left) text input; (middle) command input; (right), not a command.

Step 4 Record a video

You need to record a short video walkthrough of your implemented solutions (you can do it with Zoom or Camtasia used in assessment 1e), in which you will demonstrate how your solutions work. You need to submit the video to LMS.

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